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(No Model.) 7 2 Sheets-Shet A. EAST, M. GASSER 8v H.-ZWANZIGER. PRESSFOB STAMPING METAL SEALS, &c.

1% 373,905. I Patented Nov. 29, 1887.

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(No Model.) 2 Sheets-Sheet 2.

A. RAST, M. GASSER & H. ZWANZIGER. PRESS FOR STAMPING METAL SEALS, 6w.

' No. 373,905. 1 Patented Nov. 29. 1887.

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AUGUST RAST,

I PRESS FOR STAMPING METAL SEALS, 80c.

SPECIFICATION forming part of Letters Patent No. 373,905, dated November29, 1887.

Application filed December 8, 1886. Serial No. 221,030.

(No model) Patented in Germany July 21, 1880, No. 38,981; in BelgiumJuly 22, 18 6, No. 73,931; in England July 1886, No. 9,557; in FranceJuly 23, 1866, No. 177,558, and in Austria-Hungary December 19.1886, No.2 ,230 and No. 62,297.

To all whom it may concern:

Be it known that we, AUGUST RAST, llIICHAEL GASSER, and HEINRICHZWANZIGER, all subjects of the Emperor ofAustria-Hungary,residingatVienna,Austria-Hungary,haveinvented a new anduseful Press for Stamping Metal Seals, &c., (forwhich we have obtainedpatents in'Austria-Hungary, No. 28,230 and No. 62,297, of December 19,1886; in Germany,No. 38,981, of July 21, 1886; in England,No. 9,557, ofJuly 23,1886; in France, No. 177,558,0fJu1y 23, 1886, and in Belgium,No. 73,931, of July 22, 1886,) of which the following is aspecification.

Our invention relates to a press for stamping metal seals, 850., whichhas the characteristic peculiarity that the movable die is guided in astraight line and that no springs are used, neither for ejecting thepressed seal nor for stopping or actuating any part of the press.

In the annexed drawings, Figure 1 repre sents a side view of the press;Fig. 2, a view from above. Fig. 3 represents a longitudinalsection ofthe press when opened; Fig. 4:,when closed. Fig. 5 is a front view,(closed position,) and Fig. 6 the same in an open position. Figs. 7, 8,and 9 represent the sliding piece in different views. Figs. 10 and 11represent the lower movable die. Fig. 12 represents the upper stationarydie.

Similar letters of reference indicate corresponding parts.

The one lever-handle of the press has on one end a casing, a, to whichthe second lever-handle, b,is movably connected by means of a bolt ortrunnion, f. 'On both sides of the casing are arranged links c,which aremovably connected on the one side by means of the bolt (Z to the slidingpiece g (carrying the movable die it and arranged in the casing a) andon the other side by means of the bolt 6 to thelever b. The slidingpiece 9, sliding with lugs or studs 0 0 in slots of the casing, (whichlugs prevent it from turning,) is centrally perforated and carries theone movable die h, opposite to which the stationary die i is arranged inthe casing.

The operation is the following: Having put the object to be pressed(seal metal, 8m.) into the opening of the casing (marked by the letterq) between both the dies hand 13, (whereby the centering of the seal,850., is effected by the rest-support m, which may be applied eitheronthe sliding piece 9, as shown in the drawings, or on the stationary diet',) first, the sliding piece 9 is moved from the position shown in Fig.3 into that of Fig. 4, by means of the lever-handle b and links 00, sothat the upper cylindrical part of the sliding piece em braces theobject to be pressed, (seal metal, 8m.) By the resistance of the sealthe die 71. is not moved at once. Only when the sliding piece 9 hasmoved so far that its inner shoulder pushes against the enlarged part ofthe die It the latter is carried along during the continued motion andpressed into the seal, 850. By the arrangement of the links a 0laterally from the casing a, and in the longitudinal direction ofthelatter, the great advantage is attained that the links act almost in thedirection of motion of the sliding piece-g. On the other hand, as theconnecting-line of the centers of e and f is nearly horizontal, thepoint d (being rigidly connected with 6) moves on its rotation about ffaster on the beginning than afterward. The more the point e approachesthe position shown in Fig. 5 the more the upward motion is retarded,and,

as mechanical work is, the product of space and force, it is easilyunderstood that if the product is to be the same the increase of the onefactor requires the decrease of the other.

This is absolutely necessary, as the object to be pressed presents anincreasing resistance. After pressing-that isto say, on the retrogrademovement of the lever b-the sliding piece, together with the die handthe pressed object, is moved downward. Only when the key or bolt h(which is secured on both the ends in the casing a and extends throughthe slots n of the sliding piece g and die h) pushes against the upperend of the slot of the die h the continued movement of the latter isstopped. The sliding piece 9, the slot n of which is longer than that ofthe die h, continues to fall, so that the die h appears to ascend inregard to the sliding piece 9, so that the former can never project overthe upper edge of the latter. The two small openings 9' on the upperedge of the sliding piece are designated for the passage of both thethreads or cords.

Having fully described our invention, what we desire to claim and secureby Letters Patent is 1. In a press for stamping metal seals, &c., thecombination of two handle-levers with a casing, a, sliding piece 9,movable die h, provided with slots nandp, stationary die 2', bolts d, e,andf, and links 0, key 7:, and screw Z, all substantially as set forth,and for the purpose specified.

AUGUST RASI. MICHAEL GASSER. HEINRICH ZVVANZIGER.

Witnesses:

EDMUND J USSEN, OTTO SCHIFFER.

